)in response to high blood glucose, the pancreas releases insulin to enable glucose to enter body cells. when the blood glucose level returns to normal, insulin release stops. this is an example of regulation by:

glucagon

Explanation:

Insulin helps the cells absorb glucose, reducing blood sugar and providing the cells with glucose for energy. When blood sugar levels are too low, the pancreas releases glucagon. Glucagon instructs the liver to release stored glucose, which causes blood sugar to rise.

c is the answer to this question. altitude affects the weather because air molecules evaporate.